diff options
| -rw-r--r-- | src/init.cpp | 2 | ||||
| -rw-r--r-- | src/net.cpp | 8 | ||||
| -rw-r--r-- | src/net.h | 1 | ||||
| -rw-r--r-- | src/torcontrol.cpp | 278 | ||||
| -rw-r--r-- | src/torcontrol.h | 1 |
5 files changed, 206 insertions, 84 deletions
diff --git a/src/init.cpp b/src/init.cpp index 77837f85c3..024355f7c1 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -160,6 +160,7 @@ void Interrupt(boost::thread_group& threadGroup) InterruptHTTPRPC(); InterruptRPC(); InterruptREST(); + InterruptTorControl(); threadGroup.interrupt_all(); } @@ -362,6 +363,7 @@ std::string HelpMessage(HelpMessageMode mode) strUsage += HelpMessageOpt("-seednode=<ip>", _("Connect to a node to retrieve peer addresses, and disconnect")); strUsage += HelpMessageOpt("-timeout=<n>", strprintf(_("Specify connection timeout in milliseconds (minimum: 1, default: %d)"), DEFAULT_CONNECT_TIMEOUT)); strUsage += HelpMessageOpt("-torcontrol=<ip>:<port>", strprintf(_("Tor control port to use if onion listening enabled (default: %s)"), DEFAULT_TOR_CONTROL)); + strUsage += HelpMessageOpt("-torpassword=<pass>", _("Tor control port password (default: empty)")); #ifdef USE_UPNP #if USE_UPNP strUsage += HelpMessageOpt("-upnp", _("Use UPnP to map the listening port (default: 1 when listening and no -proxy)")); diff --git a/src/net.cpp b/src/net.cpp index 9d01f2557e..ada4a1bb62 100644 --- a/src/net.cpp +++ b/src/net.cpp @@ -263,6 +263,14 @@ bool AddLocal(const CNetAddr &addr, int nScore) return AddLocal(CService(addr, GetListenPort()), nScore); } +bool RemoveLocal(const CService& addr) +{ + LOCK(cs_mapLocalHost); + LogPrintf("RemoveLocal(%s)\n", addr.ToString()); + mapLocalHost.erase(addr); + return true; +} + /** Make a particular network entirely off-limits (no automatic connects to it) */ void SetLimited(enum Network net, bool fLimited) { @@ -128,6 +128,7 @@ bool IsLimited(enum Network net); bool IsLimited(const CNetAddr& addr); bool AddLocal(const CService& addr, int nScore = LOCAL_NONE); bool AddLocal(const CNetAddr& addr, int nScore = LOCAL_NONE); +bool RemoveLocal(const CService& addr); bool SeenLocal(const CService& addr); bool IsLocal(const CService& addr); bool GetLocal(CService &addr, const CNetAddr *paddrPeer = NULL); diff --git a/src/torcontrol.cpp b/src/torcontrol.cpp index 40ffbe61b1..08644f2968 100644 --- a/src/torcontrol.cpp +++ b/src/torcontrol.cpp @@ -2,7 +2,7 @@ #include "utilstrencodings.h" #include "net.h" #include "util.h" -#include "init.h" // Just for ShutdownRequested +#include "crypto/hmac_sha256.h" #include <vector> #include <deque> @@ -16,13 +16,33 @@ #include <boost/algorithm/string/predicate.hpp> #include <boost/algorithm/string/split.hpp> #include <boost/algorithm/string/classification.hpp> +#include <boost/algorithm/string/replace.hpp> #include <event2/bufferevent.h> #include <event2/buffer.h> #include <event2/util.h> #include <event2/event.h> +#include <event2/thread.h> +/** Default control port */ const std::string DEFAULT_TOR_CONTROL = "127.0.0.1:9051"; +/** Tor cookie size (from control-spec.txt) */ +static const int TOR_COOKIE_SIZE = 32; +/** Size of client/server nonce for SAFECOOKIE */ +static const int TOR_NONCE_SIZE = 32; +/** For computing serverHash in SAFECOOKIE */ +static const std::string TOR_SAFE_SERVERKEY = "Tor safe cookie authentication server-to-controller hash"; +/** For computing clientHash in SAFECOOKIE */ +static const std::string TOR_SAFE_CLIENTKEY = "Tor safe cookie authentication controller-to-server hash"; +/** Exponential backoff configuration - initial timeout in seconds */ +static const float RECONNECT_TIMEOUT_START = 1.0; +/** Exponential backoff configuration - growth factor */ +static const float RECONNECT_TIMEOUT_EXP = 1.5; +/** Maximum length for lines received on TorControlConnection. + * tor-control-spec.txt mentions that there is explicitly no limit defined to line length, + * this is belt-and-suspenders sanity limit to prevent memory exhaustion. + */ +static const int MAX_LINE_LENGTH = 100000; /****** Low-level TorControlConnection ********/ @@ -123,7 +143,7 @@ void TorControlConnection::readcb(struct bufferevent *bev, void *ctx) if (s.size() < 4) // Short line continue; // <status>(-|+| )<data><CRLF> - self->message.code = atoi(s.substr(0,3).c_str()); + self->message.code = atoi(s.substr(0,3)); self->message.lines.push_back(s.substr(4)); char ch = s[3]; // '-','+' or ' ' if (ch == ' ') { @@ -138,25 +158,32 @@ void TorControlConnection::readcb(struct bufferevent *bev, void *ctx) self->reply_handlers.front()(*self, self->message); self->reply_handlers.pop_front(); } else { - LogPrintf("[tor] Received unexpected sync reply %i\n", self->message.code); + LogPrint("tor", "tor: Received unexpected sync reply %i\n", self->message.code); } } self->message.Clear(); } } + // Check for size of buffer - protect against memory exhaustion with very long lines + // Do this after evbuffer_readln to make sure all full lines have been + // removed from the buffer. Everything left is an incomplete line. + if (evbuffer_get_length(input) > MAX_LINE_LENGTH) { + LogPrintf("tor: Disconnecting because MAX_LINE_LENGTH exceeded\n"); + self->Disconnect(); + } } void TorControlConnection::eventcb(struct bufferevent *bev, short what, void *ctx) { TorControlConnection *self = (TorControlConnection*)ctx; if (what & BEV_EVENT_CONNECTED) { - LogPrintf("[tor] Succesfully connected!\n"); + LogPrint("tor", "tor: Succesfully connected!\n"); self->connected(*self); } else if (what & (BEV_EVENT_EOF|BEV_EVENT_ERROR)) { if (what & BEV_EVENT_ERROR) - LogPrintf("[tor] Error connecting to Tor control socket\n"); + LogPrint("tor", "tor: Error connecting to Tor control socket\n"); else - LogPrintf("[tor] End of stream\n"); + LogPrint("tor", "tor: End of stream\n"); self->Disconnect(); self->disconnected(*self); } @@ -171,7 +198,7 @@ bool TorControlConnection::Connect(const std::string &target, const ConnectionCB int connect_to_addrlen = sizeof(connect_to_addr); if (evutil_parse_sockaddr_port(target.c_str(), (struct sockaddr*)&connect_to_addr, &connect_to_addrlen)<0) { - perror("evutil_parse_sockaddr_port\n"); + LogPrintf("tor: Error parsing socket address %s\n", target); return false; } @@ -186,7 +213,7 @@ bool TorControlConnection::Connect(const std::string &target, const ConnectionCB // Finally, connect to target if (bufferevent_socket_connect(b_conn, (struct sockaddr*)&connect_to_addr, connect_to_addrlen) < 0) { - perror("bufferevent_socket_connect"); + LogPrintf("tor: Error connecting to address %s\n", target); return false; } return true; @@ -274,8 +301,14 @@ static std::map<std::string,std::string> ParseTorReplyMapping(const std::string return mapping; } -/** Read full contents of a file and return them in a std::string. */ -static std::pair<bool,std::string> ReadBinaryFile(const std::string &filename) +/** Read full contents of a file and return them in a std::string. + * Returns a pair <status, string>. + * If an error occured, status will be false, otherwise status will be true and the data will be returned in string. + * + * @param maxsize Puts a maximum size limit on the file that is read. If the file is larger than this, truncated data + * (with len > maxsize) will be returned. + */ +static std::pair<bool,std::string> ReadBinaryFile(const std::string &filename, size_t maxsize=std::numeric_limits<size_t>::max()) { FILE *f = fopen(filename.c_str(), "rb"); if (f == NULL) @@ -283,8 +316,11 @@ static std::pair<bool,std::string> ReadBinaryFile(const std::string &filename) std::string retval; char buffer[128]; size_t n; - while ((n=fread(buffer, 1, sizeof(buffer), f)) > 0) + while ((n=fread(buffer, 1, sizeof(buffer), f)) > 0) { retval.append(buffer, buffer+n); + if (retval.size() > maxsize) + break; + } fclose(f); return std::make_pair(true,retval); } @@ -297,8 +333,10 @@ static bool WriteBinaryFile(const std::string &filename, const std::string &data FILE *f = fopen(filename.c_str(), "wb"); if (f == NULL) return false; - if (fwrite(data.data(), 1, data.size(), f) != data.size()) + if (fwrite(data.data(), 1, data.size(), f) != data.size()) { + fclose(f); return false; + } fclose(f); return true; } @@ -326,14 +364,20 @@ private: std::string private_key; std::string service_id; bool reconnect; - struct event *shutdown_poll_ev; struct event *reconnect_ev; float reconnect_timeout; + CService service; + /** Cooie for SAFECOOKIE auth */ + std::vector<uint8_t> cookie; + /** ClientNonce for SAFECOOKIE auth */ + std::vector<uint8_t> clientNonce; /** Callback for ADD_ONION result */ void add_onion_cb(TorControlConnection& conn, const TorControlReply& reply); /** Callback for AUTHENTICATE result */ void auth_cb(TorControlConnection& conn, const TorControlReply& reply); + /** Callback for AUTHCHALLENGE result */ + void authchallenge_cb(TorControlConnection& conn, const TorControlReply& reply); /** Callback for PROTOCOLINFO result */ void protocolinfo_cb(TorControlConnection& conn, const TorControlReply& reply); /** Callback after succesful connection */ @@ -341,55 +385,41 @@ private: /** Callback after connection lost or failed connection attempt */ void disconnected_cb(TorControlConnection& conn); - /** Callback for shutdown poll timer */ - static void shutdown_poll_cb(evutil_socket_t fd, short what, void *arg); /** Callback for reconnect timer */ static void reconnect_cb(evutil_socket_t fd, short what, void *arg); }; -/** Exponential backoff configuration - initial timeout in seconds */ -static const float RECONNECT_TIMEOUT_START = 1.0; -/** Exponential backoff configuration - growth factor */ -static const float RECONNECT_TIMEOUT_EXP = 1.5; - TorController::TorController(struct event_base* base, const std::string& target): base(base), - target(target), conn(base), reconnect(true), shutdown_poll_ev(0), reconnect_ev(0), + target(target), conn(base), reconnect(true), reconnect_ev(0), reconnect_timeout(RECONNECT_TIMEOUT_START) { // Start connection attempts immediately if (!conn.Connect(target, boost::bind(&TorController::connected_cb, this, _1), boost::bind(&TorController::disconnected_cb, this, _1) )) { - LogPrintf("[tor] Initiating connection to Tor control port %s failed\n", target); + LogPrintf("tor: Initiating connection to Tor control port %s failed\n", target); } // Read service private key if cached std::pair<bool,std::string> pkf = ReadBinaryFile(GetPrivateKeyFile()); if (pkf.first) { - LogPrintf("[tor] Reading cached private key from %s\n", GetPrivateKeyFile()); + LogPrint("tor", "tor: Reading cached private key from %s\n", GetPrivateKeyFile()); private_key = pkf.second; } - // Periodic timer event to poll for shutdown - // The same 200ms as in bitcoind. This is not the nicest solution, but we cannot exactly use - // boost::interrupt here. - struct timeval time; - time.tv_usec = 200000; - time.tv_sec = 0; - shutdown_poll_ev = event_new(base, -1, EV_PERSIST, shutdown_poll_cb, this); - event_add(shutdown_poll_ev, &time); } TorController::~TorController() { - if (shutdown_poll_ev) - event_del(shutdown_poll_ev); if (reconnect_ev) event_del(reconnect_ev); + if (service.IsValid()) { + RemoveLocal(service); + } } void TorController::add_onion_cb(TorControlConnection& conn, const TorControlReply& reply) { if (reply.code == 250) { - LogPrintf("[tor] ADD_ONION succesful\n"); + LogPrint("tor", "tor: ADD_ONION succesful\n"); BOOST_FOREACH(const std::string &s, reply.lines) { std::map<std::string,std::string> m = ParseTorReplyMapping(s); std::map<std::string,std::string>::iterator i; @@ -399,26 +429,26 @@ void TorController::add_onion_cb(TorControlConnection& conn, const TorControlRep private_key = i->second; } - CService service(service_id+".onion", GetListenPort(), false); - LogPrintf("[tor] Got service ID %s, advertizing service %s\n", service_id, service.ToString()); + service = CService(service_id+".onion", GetListenPort(), false); + LogPrintf("tor: Got service ID %s, advertizing service %s\n", service_id, service.ToString()); if (WriteBinaryFile(GetPrivateKeyFile(), private_key)) { - LogPrintf("[tor] Cached service private key to %s\n", GetPrivateKeyFile()); + LogPrint("tor", "tor: Cached service private key to %s\n", GetPrivateKeyFile()); } else { - LogPrintf("[tor] Error writing service private key to %s\n", GetPrivateKeyFile()); + LogPrintf("tor: Error writing service private key to %s\n", GetPrivateKeyFile()); } AddLocal(service, LOCAL_MANUAL); // ... onion requested - keep connection open } else if (reply.code == 510) { // 510 Unrecognized command - LogPrintf("[tor] Add onion failed with unrecognized command (You probably need to upgrade Tor)\n"); + LogPrintf("tor: Add onion failed with unrecognized command (You probably need to upgrade Tor)\n"); } else { - LogPrintf("[tor] Add onion failed; error code %d\n", reply.code); + LogPrintf("tor: Add onion failed; error code %d\n", reply.code); } } void TorController::auth_cb(TorControlConnection& conn, const TorControlReply& reply) { if (reply.code == 250) { - LogPrintf("[tor] Authentication succesful\n"); + LogPrint("tor", "tor: Authentication succesful\n"); // Finally - now create the service if (private_key.empty()) // No private key, generate one private_key = "NEW:BEST"; @@ -428,7 +458,65 @@ void TorController::auth_cb(TorControlConnection& conn, const TorControlReply& r conn.Command(strprintf("ADD_ONION %s Port=%i,127.0.0.1:%i", private_key, GetListenPort(), GetListenPort()), boost::bind(&TorController::add_onion_cb, this, _1, _2)); } else { - LogPrintf("[tor] Authentication failed\n"); + LogPrintf("tor: Authentication failed\n"); + } +} + +/** Compute Tor SAFECOOKIE response. + * + * ServerHash is computed as: + * HMAC-SHA256("Tor safe cookie authentication server-to-controller hash", + * CookieString | ClientNonce | ServerNonce) + * (with the HMAC key as its first argument) + * + * After a controller sends a successful AUTHCHALLENGE command, the + * next command sent on the connection must be an AUTHENTICATE command, + * and the only authentication string which that AUTHENTICATE command + * will accept is: + * + * HMAC-SHA256("Tor safe cookie authentication controller-to-server hash", + * CookieString | ClientNonce | ServerNonce) + * + */ +static std::vector<uint8_t> ComputeResponse(const std::string &key, const std::vector<uint8_t> &cookie, const std::vector<uint8_t> &clientNonce, const std::vector<uint8_t> &serverNonce) +{ + CHMAC_SHA256 computeHash((const uint8_t*)key.data(), key.size()); + std::vector<uint8_t> computedHash(CHMAC_SHA256::OUTPUT_SIZE, 0); + computeHash.Write(begin_ptr(cookie), cookie.size()); + computeHash.Write(begin_ptr(clientNonce), clientNonce.size()); + computeHash.Write(begin_ptr(serverNonce), serverNonce.size()); + computeHash.Finalize(begin_ptr(computedHash)); + return computedHash; +} + +void TorController::authchallenge_cb(TorControlConnection& conn, const TorControlReply& reply) +{ + if (reply.code == 250) { + LogPrint("tor", "tor: SAFECOOKIE authentication challenge succesful\n"); + std::pair<std::string,std::string> l = SplitTorReplyLine(reply.lines[0]); + if (l.first == "AUTHCHALLENGE") { + std::map<std::string,std::string> m = ParseTorReplyMapping(l.second); + std::vector<uint8_t> serverHash = ParseHex(m["SERVERHASH"]); + std::vector<uint8_t> serverNonce = ParseHex(m["SERVERNONCE"]); + LogPrint("tor", "tor: AUTHCHALLENGE ServerHash %s ServerNonce %s\n", HexStr(serverHash), HexStr(serverNonce)); + if (serverNonce.size() != 32) { + LogPrintf("tor: ServerNonce is not 32 bytes, as required by spec\n"); + return; + } + + std::vector<uint8_t> computedServerHash = ComputeResponse(TOR_SAFE_SERVERKEY, cookie, clientNonce, serverNonce); + if (computedServerHash != serverHash) { + LogPrintf("tor: ServerHash %s does not match expected ServerHash %s\n", HexStr(serverHash), HexStr(computedServerHash)); + return; + } + + std::vector<uint8_t> computedClientHash = ComputeResponse(TOR_SAFE_CLIENTKEY, cookie, clientNonce, serverNonce); + conn.Command("AUTHENTICATE " + HexStr(computedClientHash), boost::bind(&TorController::auth_cb, this, _1, _2)); + } else { + LogPrintf("tor: Invalid reply to AUTHCHALLENGE\n"); + } + } else { + LogPrintf("tor: SAFECOOKIE authentication challenge failed\n"); } } @@ -455,37 +543,52 @@ void TorController::protocolinfo_cb(TorControlConnection& conn, const TorControl std::map<std::string,std::string> m = ParseTorReplyMapping(l.second); std::map<std::string,std::string>::iterator i; if ((i = m.find("Tor")) != m.end()) { - LogPrintf("[tor] Connected to Tor version %s\n", i->second); + LogPrint("tor", "tor: Connected to Tor version %s\n", i->second); } } } BOOST_FOREACH(const std::string &s, methods) { - LogPrintf("[tor] Supported authentication method: %s\n", s); + LogPrint("tor", "tor: Supported authentication method: %s\n", s); } - // Prefer NULL, otherwise COOKIE. If a password is provided, use HASHEDPASSWORD - // We do not support SAFECOOKIE + // Prefer NULL, otherwise SAFECOOKIE. If a password is provided, use HASHEDPASSWORD /* Authentication: * cookie: hex-encoded ~/.tor/control_auth_cookie * password: "password" */ + std::string torpassword = GetArg("-torpassword", ""); if (methods.count("NULL")) { - LogPrintf("[tor] Using NULL authentication\n"); + LogPrint("tor", "tor: Using NULL authentication\n"); conn.Command("AUTHENTICATE", boost::bind(&TorController::auth_cb, this, _1, _2)); - } else if (methods.count("COOKIE")) { + } else if (methods.count("SAFECOOKIE")) { // Cookie: hexdump -e '32/1 "%02x""\n"' ~/.tor/control_auth_cookie - LogPrintf("[tor] Using COOKIE authentication, reading cookie authentication from %s\n", cookiefile); - std::string cookie = ReadBinaryFile(cookiefile).second; - if (!cookie.empty()) { - conn.Command("AUTHENTICATE " + HexStr(cookie), boost::bind(&TorController::auth_cb, this, _1, _2)); + LogPrint("tor", "tor: Using SAFECOOKIE authentication, reading cookie authentication from %s\n", cookiefile); + std::pair<bool,std::string> status_cookie = ReadBinaryFile(cookiefile, TOR_COOKIE_SIZE); + if (status_cookie.first && status_cookie.second.size() == TOR_COOKIE_SIZE) { + // conn.Command("AUTHENTICATE " + HexStr(status_cookie.second), boost::bind(&TorController::auth_cb, this, _1, _2)); + cookie = std::vector<uint8_t>(status_cookie.second.begin(), status_cookie.second.end()); + clientNonce = std::vector<uint8_t>(TOR_NONCE_SIZE, 0); + GetRandBytes(&clientNonce[0], TOR_NONCE_SIZE); + conn.Command("AUTHCHALLENGE SAFECOOKIE " + HexStr(clientNonce), boost::bind(&TorController::authchallenge_cb, this, _1, _2)); } else { - LogPrintf("[tor] Authentication cookie not found\n"); + if (status_cookie.first) { + LogPrintf("tor: Authentication cookie %s is not exactly %i bytes, as is required by the spec\n", cookiefile, TOR_COOKIE_SIZE); + } else { + LogPrintf("tor: Authentication cookie %s could not be opened (check permissions)\n", cookiefile); + } + } + } else if (methods.count("HASHEDPASSWORD")) { + if (!torpassword.empty()) { + LogPrint("tor", "tor: Using HASHEDPASSWORD authentication\n"); + boost::replace_all(torpassword, "\"", "\\\""); + conn.Command("AUTHENTICATE \"" + torpassword + "\"", boost::bind(&TorController::auth_cb, this, _1, _2)); + } else { + LogPrintf("tor: Password authentication required, but no password provided with -torpassword\n"); } } else { - /* TODO HASHEDPASSWORD w/ manual auth */ - LogPrintf("[tor] No supported authentication method\n"); + LogPrintf("tor: No supported authentication method\n"); } } else { - LogPrintf("[tor] Requesting protocol info failed\n"); + LogPrintf("tor: Requesting protocol info failed\n"); } } @@ -494,14 +597,18 @@ void TorController::connected_cb(TorControlConnection& conn) reconnect_timeout = RECONNECT_TIMEOUT_START; // First send a PROTOCOLINFO command to figure out what authentication is expected if (!conn.Command("PROTOCOLINFO 1", boost::bind(&TorController::protocolinfo_cb, this, _1, _2))) - LogPrintf("[tor] Error sending initial protocolinfo command\n"); + LogPrintf("tor: Error sending initial protocolinfo command\n"); } void TorController::disconnected_cb(TorControlConnection& conn) { + // Stop advertizing service when disconnected + if (service.IsValid()) + RemoveLocal(service); + service = CService(); if (!reconnect) return; - LogPrintf("[tor] Disconnected from Tor control port %s, trying to reconnect\n", target); + LogPrintf("tor: Disconnected from Tor control port %s, trying to reconnect\n", target); // Single-shot timer for reconnect. Use exponential backoff. struct timeval time = MillisToTimeval(int64_t(reconnect_timeout * 1000.0)); reconnect_ev = event_new(base, -1, 0, reconnect_cb, this); @@ -516,7 +623,7 @@ void TorController::Reconnect() */ if (!conn.Connect(target, boost::bind(&TorController::connected_cb, this, _1), boost::bind(&TorController::disconnected_cb, this, _1) )) { - LogPrintf("[tor] Re-initiating connection to Tor control port %s failed\n", target); + LogPrintf("tor: Re-initiating connection to Tor control port %s failed\n", target); } } @@ -525,23 +632,6 @@ std::string TorController::GetPrivateKeyFile() return (GetDataDir() / "onion_private_key").string(); } -void TorController::shutdown_poll_cb(evutil_socket_t fd, short what, void *arg) -{ - TorController *self = (TorController*)arg; - if (ShutdownRequested()) { - // Shutdown was requested. Stop timers, and request control connection to terminate - LogPrintf("[tor] Thread interrupt\n"); - if (self->shutdown_poll_ev) - event_del(self->shutdown_poll_ev); - self->shutdown_poll_ev = 0; - if (self->reconnect_ev) - event_del(self->reconnect_ev); - self->reconnect_ev = 0; - self->reconnect = false; - self->conn.Disconnect(); - } -} - void TorController::reconnect_cb(evutil_socket_t fd, short what, void *arg) { TorController *self = (TorController*)arg; @@ -549,27 +639,47 @@ void TorController::reconnect_cb(evutil_socket_t fd, short what, void *arg) } /****** Thread ********/ +struct event_base *base; +boost::thread torControlThread; static void TorControlThread() { - struct event_base *base = event_base_new(); - if (!base) { - LogPrintf("[tor] Unable to create event_base_new"); - return; - } TorController ctrl(base, GetArg("-torcontrol", DEFAULT_TOR_CONTROL)); event_base_dispatch(base); - event_base_free(base); } void StartTorControl(boost::thread_group& threadGroup, CScheduler& scheduler) { - threadGroup.create_thread(boost::bind(&TraceThread<void (*)()>, "torcontrol", &TorControlThread)); + assert(!base); +#ifdef WIN32 + evthread_use_windows_threads(); +#else + evthread_use_pthreads(); +#endif + base = event_base_new(); + if (!base) { + LogPrintf("tor: Unable to create event_base\n"); + return; + } + + torControlThread = boost::thread(boost::bind(&TraceThread<void (*)()>, "torcontrol", &TorControlThread)); +} + +void InterruptTorControl() +{ + if (base) { + LogPrintf("tor: Thread interrupt\n"); + event_base_loopbreak(base); + } } void StopTorControl() { - /* Nothing to do actually. Everything is cleaned up when thread exits */ + if (base) { + torControlThread.join(); + event_base_free(base); + base = 0; + } } diff --git a/src/torcontrol.h b/src/torcontrol.h index fa55f6b030..72dc82c5b1 100644 --- a/src/torcontrol.h +++ b/src/torcontrol.h @@ -14,6 +14,7 @@ extern const std::string DEFAULT_TOR_CONTROL; static const bool DEFAULT_LISTEN_ONION = true; void StartTorControl(boost::thread_group& threadGroup, CScheduler& scheduler); +void InterruptTorControl(); void StopTorControl(); #endif /* BITCOIN_TORCONTROL_H */ |